After tasting tremendous success first with EPZ’s (Export Processing Zones) and then with SEEPZ (Santacruz Electronics Export Processing Zone), the Ministry of Commerce and Industry of the Govt. of India is now following in the footsteps of China and setting up SEZ’s (Special Economic Zones) all over the country.
A general introduction to the concept of SEZ can be found here on wikipedia.
A list of SEZ’s that are already operational can be found here.
For an introduction to the SEZ concept in India, check this link.